乳腺良性与恶性肿物的超声显示鉴别点是（） A.边界是否光滑、完整 B.内部是否回声减

D

Here are three notices on the school bulletin board.

Chinese Prints

This exhibition starts on January 3 and ends on January 21.

At 6:00 p.m. on Friday, 4 January, there will be a talk on Chinese painting by Professor Li Yan in the Yingdong Gym.

Opening times: Mon — Fri, from 8: 00 am to 5: 00 pm Place: the School Library  Ticket:  Free

The Day after Tomorrow

American movie    Director: Roland Emmerich

Cast (in credits order):  Jack Hall, Laura Chapman, Jason Evans   Place:  the Hua Xing Cinema

Time: 10: 00 am, 6: 30 pm; Saturday, December 21    Ticket: ¥ 20

Piano Concert

Chinese pianist: Li Yundi — the winner of the Fourteenth International Chopin Competition in Warsaw

Place:  the Centre Theatre   Time:  7: 00 pm, January 25, 2008  Ticket: ¥150, ¥250, ¥350

For more information, please come to Students Union.

48. Students can visit the Exhibition of Chinese Prints on _________.

A. January 3              B. December 21          C. Saturday                  D. Sunday

49. If you want to see the American movie The Day after Tomorrow, you will pay ________.

A. ¥ 20             B. ¥150                      C. ¥250                     D. nothing

50. If you want to attend Li Yundi’s piano concert, you will go to _______.

A. the School Library                              B. the Hua Xing Cinema  

C. the Centre Theatre                           D. the Yingdong Gym

全身麻醉后老年人苏醒延迟的原因中不正确的是（）

A.通气功能障碍，二氧化碳蓄积

B.肝功能减退，药物消除速率减慢

C.对肾素一血管紧张素系统反应迟钝，易导致高钠，低钾

D.对麻醉镇痛药敏感性增加

E.肺泡通气量减低，吸入麻醉药不易排出体外

被腐蚀报废的金属制品的制造价值往往要比金属本身的价值（）。

A.高

B.低

C.相等

D、基本不变

文学创造的构思方式有哪些？

犯罪嫌疑人、被告人在取保候审期间未违反规定的，取保候审结束的时候，不必退还保证金。 ( )